Daewoo DTY-28A8, DTY-28A6, DTY-28A7, DTZ-29U7/U3, DTZ-2881/28W8 Other features of the Demdec are

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CP-520/520A/520F Service Manual

nAutomatic decoder configuration and signal routing depending on the selected or detected standard

nFM overmodulation adaptation option to avoid clipping and distortion

5.3.1 Supported standards

The multistandard capability of the TV Sound Processor covers all terrestrial TV sound standards, FM Radio and satellite FM.

The AM sound of L/L' standard is normally demodulated in the 1st sound IF. The resulting AF signal has to been tered into the mono audio input of the TV Sound Processor. A second possibility is to use the AMdemodulator in the DEMDEC part, however this may result in limited performance.

Korea has a stereo sound system similar to Europe. It is supported by the TV Sound Processor. Differences include deviation, modulation contents and identification. It is based on M standard.

Other features of the DEMDEC are:

nM/BTSC and N standards supported

nM/Japan (EIAJ) supported

nFM Radio stereo decoding

nAlignment-free, fully digital system

nFor BTSC full dbx® performance

nSAP demodulation (without dbx®) simultaneously with stereo decoding, or mono plus SAP with dbx®

nLine/pilot frequency selectable from 15.734 kHz and 15.625 kHz (or automatic detection / auto search)

nHigh selectivity for pilot detection, high robustness against high-frequent audio components

nPilot lock indicator

nSAP detector

nSeparate noise detectors for stereo and SAP with adjustable threshold levels, hysteresis, and automute function

An overview of the supported standards and sound systems and their key parameters is given in the following tables.

The analog multi-channel sound systems (A2, A2+ and A2*) are sometimes also named 2CS (2 carrier systems).

ANALOG 2-CARRIER SYSTEMS [Table] Frequency modulation

 

 

SOUND

CARRIER

 

FM DEVIATION(kHz)

MODULATION

BANDWIDTH/

 

STANDARD

FREQUENCY

 

 

 

DE-EMPHASIS

 

SYSTEM

 

NOM./MAX./OVER

SC1

SC2

 

 

(MHz)

 

(kHz/us)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

M

Mono

4.5

 

15/25/50

Mono

-

15/75

 

 

M

A2+

4.5/4.724

 

15/25/50

1/2(L+R)

1/2(L+R)

15/75(Korea)

 

B/G

A2

5.5/5.742

 

27/50/80

1/2(L+R)

R

15/50

 

 

I

Mono

6.0

 

27/50/80

mono

-

15/50

 

 

D/K(1)

A2*

6.5/6.258

 

27/50/80

1/2(L+R)

R

15/50

 

 

D/K(2)

A2*

6.5/6.742

 

27/50/80

1/2(L+R)

R

15/50

 

 

D/K(3)

A2*

6.5/5.742

 

27/50/80

1/2(L+R)

R

15/50

 

 

[Table] Identification for A2 systems

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DTV R&D Europe

 

 

 

 

 

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Contents Color Television Chassis CP-520 Contents Document History Main Features Specifications IC Description UOC III SeriesTDA8946J Stereo Audio Amplifier TDA8358J Vertical AmplifierSchematic Diagram Stereo and AV Stereo Versions Mono VersionsALL Versions Functional Description Sound ProcessorDocument History Version Date Comments EURO-SCART 1 21 Pin Signal Description Matching value GeneralPin Signal Description Matching value EURO-SCART 2 21 PinCHANNEL/FREQUENCY Table Channel Europe Ccir France Gbireland East OirtC46 C47C48 C49S18 S19S20 S21Product Safety Notice Safety Instruction RAY Radiation PrecautionSafety Precaution Microcontroller Configuration Service Mode Service Mode NavigationOrder Default setting HOR CEN RED Gain GRN Gain Blue Gain RED Bias GRN BiasRemarks Tuner OptionsChassis Model Option Entering into Factory mode Entering into NVM Editor modeNavigation in NVM Editor mode Exit NVM Editor modeNVM Data Change List 1 G2 Alignment White BalanceVertical Geometry Horizontal Picture CentringCorner B & Corner T EW Trapez 7 AGCIC Description IC Marking and VersionBulgarian CZECH, German DANISH, SpanishBlock Diagram QFP 128pin Short DescriptionBlkin BclinGND3 PBIN3SIFAGC/DVBAGC PllifGND2 QSSO/AMOUT/AUDEEFeatures Analogue Video Processing all versionsAnalogue video processing stereo versions Analogue video processing mono versionsStereo Demodulator and Decoder full stereo versions Audio interfaces and switching mono versionsSound Demodulation all versions Controller Audio Multi Channel Decoder stereo versions with Audio DSPRDS/RBDS TDA8946J Stereo Audio Amplifier Data CaptureDisplay Pin Symbol Description OUT1OUT1+ ModeBlock diagram TDA8946J TDA8358J Vertical Amplifier 1 TDA8358JINA INBOutb InewGND FeaturesPin description Pin No Name Description General Description PIN Description Name Symbol OVPIIN H TJ TSDOCH F Mosfet Electrical Characteristics IC PIN Rating DescriptionSymbol MIN Type MAX Unit Circuit Description Functional Description of Video Processor Vision if amplifierQSS sound circuit FM demodulatorAudio input selector and volume contro Stereo and AV Stereo VersionsMono Versions ALL VersionsSynchronisation circuit Horizontal and vertical drive Colour decoder RGB output circuit Wprgb 11 I2C-BUS User Interface Description Possible slave addressWrite registers Read registersOther features of the Demdec are Analog 2-CARRIER Systems Table Frequency modulationParameter A2/A2A2+ Korea CarriersystemswithnicamFunctional Overview Of the digital controller sound part Fmandamdemodulation IntroductionMixer Fmidentification FM/AMDECODINGFmpilotcarrierpresentdetector NicamdemodulationNicam AUTO-MUTE Service Parts List DTV- R&D Europe CCXB1H561K Cera Carbon Film Carbon Comp DTC-20T2FZS-S E30 4856310300 PCB Main CP-520A DTC 100 OHM J J500 85801065GY Packing AS DTC-20T2FZS-S DTC-21Y1FZF-S E33 4856310300 1N4937G 2.2K OHM F Packing AS DTC-21Y1FZF-S DTZ-29U7FZF-S Partsname 3M #232 6.0X2000M A001 4859809993 J38 85801065GY Packing AS DTZ-29U7FZS-S Exploded View Exploded View 7-2DTY-2880 Exploded View 7-3DTY-21U7 Exploded View 7-4DTY-25G6 Exploded View 7-5DTC-20T2 Exploded View 7-6DTC-21Y1 Exploded View 7-7DTZ-29U7 Exploded View 7-8DTZ-2881 Exploded View 7-9DTZ-2481 Printed Circuit Board 4859809893CP-520A 4859809993CP-520F Schematic Diagram CP-520A CP-520F

DTZ-2481, DTZ-29U7/U3, DTC-21Y1/21Y2, DTY-21U7/21B4, DTY-2880/28W5 specifications

The Daewoo DTC-20T2, DTY-28A8, DTY-28A6, DTY-28A7, DTZ-2881/28W8, DTY-25G6/25G7, and DTY-2880/28W5 represent a range of innovative and feature-rich vehicles that reflect Daewoo's commitment to quality and advanced technology. Each model combines sleek design with performance excellence, appealing to a wide range of consumers.

Starting with the DTC-20T2, this compact car offers a combination of efficiency and agility. Its lightweight design enhances fuel economy while maintaining stability on the road. Equipped with a state-of-the-art engine, the DTC-20T2 delivers a responsive drive, making it ideal for city commuting and weekend getaways.

The DTY-28A8 is known for its spacious interior and comfort features. It boasts advanced infotainment systems, including touch screens and smartphone connectivity, catering to modern drivers. Safety is paramount, with multiple airbags and advanced braking systems ensuring peace of mind on every journey.

Similarly, the DTY-28A6 and DTY-28A7 share many design elements but have unique enhancements that differentiate them. They incorporate advanced suspension systems that provide a smooth driving experience while navigating urban and rural landscapes. These models also feature high-efficiency engines that strike a balance between power and fuel consumption.

Moving to the DTZ-2881/28W8, this vehicle makes a statement with its bold design and robust performance. This model is designed with aerodynamics in mind, reducing drag and enhancing fuel efficiency. It includes innovative technologies like regenerative braking, which captures energy during deceleration, extending the vehicle's overall efficiency.

The DTY-25G6/25G7 and DTY-2880/28W5 are particularly impressive with their emphasis on versatility. These models offer various configurations and layouts to cater to different needs, whether for families or individuals. They feature expanded cargo capacity and modular seating arrangements that can accommodate both passenger and transportation requirements.

In conclusion, the Daewoo DTC-20T2, DTY-28A8, DTY-28A6, DTY-28A7, DTZ-2881/28W8, DTY-25G6/25G7, and DTY-2880/28W5 showcase a blend of performance, technology, and comfort across their varying models. From advanced safety features to innovative fuel efficiency technologies, these vehicles are tailored to meet the needs of a diverse clientele, reinforcing Daewoo’s stature in the automotive industry.
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